Anti-backflow valve

Details Anti-backflow valve Anti-backflow valve

1989-04-17

1990-01-23

Cohan, Alan

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

137218, E03C 110

Patent

active

048951803

ABSTRACT:
An anti-backflow valve to prevent back-flow of water within a water supply line comprises a cross-shaped housing arranged symmetrically with respect to a vertical center axis. A diaphragm is clamped between the housing and a cover and acts via a valve stem upon a relief valve. Parallel to the valve stem and located on each side of it are two check valves arranged within bores of the housing. Both check valves as well as the relief valve are arranged in a plane containing an inlet and outlet of the housing to produce a compact and symmetrical configuration which is easily inserted into a water supply line.

REFERENCES:
patent: 4207915 (1980-06-01), Becker

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